Finding the Fourth Proportional to 139,621.38, 192,681.15 and 75,963.42

Step by Step Solution

1. Step 1: Write the proportion equation
   139,621.38 : 192,681.15 = 75,963.42 : x
2. Step 2: Convert to fraction form
   139,621.38/192,681.15 = 75,963.42/x
3. Step 3: Cross multiply
   139,621.38x = 192,681.15 × 75,963.42
4. Step 4: Simplify right side
   139,621.38x = 14,636,719,123.53
5. Step 5: Solve for x
   x = 14,636,719,123.53/139,621.38
6. Step 6: Final answer
   x = 104,831.50